Glutton for Pain

I have this bad habit of walking into objects. When I was a kid, I'd ride into ditches and poles or concrete steps. My parents resigned themselves to the fact that I was injury-prone. It didn't stop me from jumping over walls, scaling rocks/roofs and... all the other stupid things that little boys do. Over time, my body's grown accustomed to bruises. Now, the moment of bruise doesn't even register, it dawns on me later, when I see blood or feel the pain, that I hurt myself.
Like the other day, I reached for a door at work and connected with the doorpost with my knuckle. It hurt, but I thought nothing of it. A few days later, it's nicely crusted into the beginning of another scar.

Heck! Who needs tattoos when you've got scars?